Has Google (NSDQ: GOOG) invested $100m or more in gaming start-up Zynga? That's what TechCrunch is reporting, citing multiple unidentified sources, as is Venturebeat; although, so far, neither company is confirming the reports; Zynga spokeswoman Dani Dudek said by e-mail Saturday evening that the company isn't commenting.

The TC report has Google investing anywhere from $100m to $200m in the California gaming company, which built its rep and revenues as a Facebook gaming phenom with Farmville but has been branching out. In February, Zynga said it would put its games on Microsoft (NSDQ: MSFT) properties, such as Windows Live Messenger, and it followed that up with a similar deal with Yahoo (NSDQ: YHOO) in May. Google and Zynga are also working on a strategic deal, which will have Zynga titles show up on a new Google Games site, according to TC.

The investment from Google - not Google Venures - reportedly closed last month. Zynga had already raised a staggering $327m since last fall. More as warranted.